The people, who wore masks to hide their identity, also looted around Rs 21,000 from him at gun point.
Nepal told RSS that they threatened him for raising the issue of greater Nepal, and interrogated him about the protest program to be held in front of the Indian Embassy on Tuesday.
The people had followed him from Maharajgunj, and attacked him when he reached the Bhaktapur bus park at Bagbazaar.
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